100
black
because they can
"Sickle cells" refers to an abnormal shape (rather like a sickle) of red blood cells. Red blood cells in humans do not have a nucleus.
yes there are two concentrations of sickle cell they are: sickle cell trait: co-dominance is established and only 50% of your cells are malformed sickle cell anemia: sickle cell is totally dominant and all cells are malformed, this only happens when both alleles are coded for sickle cell
Sickle cell is common in people from tropical areas where malaria is prevalent. Malaria can not survive on blood cells that are sickle shaped, so when populations were being killed off by malaria, those with sickle cell were surviving and passing on the sickle cell gene.
Sickle cells are also less flexible and stickier than normal red blood cells
Sickle cells?
Cannot carry normal levels of oxygen to cells :) *NovaNet*
people with sickle cell disease have no abnormal appearances. the abnormalities are found on the microscopic level when the blood cells are examined.
Exercising cost lot of energy.So Oxygen requirement increase.People with sickle cells, do not have normal number of blood cells to carry Oxygen.So energy production would not be sufficient.
Red blood cells.
sickle cell anemia